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Tue Feb 3 13:37:39 2026
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<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><p>Here are the changes that have been made in this (and the preceding) run relative to what we have been doing before.</p> <ol> <li>The newest version of AraSim has been implemented. <ol> <li>This was done because AraSim has gone through significant changes since 2019 that make it more accurate and makes it run faster.</li> </ol> </li> <li>The minimum length has been decreased to 10 cm per side. <ol> <li>This was done because we previously tested shorter lengths for a response to the reviewer when we submitting the paper to Phys Rev D. Previously, we thought that going below 37.5 cm would lead to unreliable results, but we are reassured that that is not the case now.</li> </ol> </li> <li>The GA is recording the parents and operators used to generate individuals. <ol> <li>This should allow us to look back and make a "history" of the evolution by seeing where genes come from in each generation.</li> </ol> </li> <li>The number of individuals has been increased to 100 per generation. <ol> <li>Ryan demonstrated that a higher number of individuals does lead to a substantial improvement in the speed at which the evolution converges. <ol> <li>We previously thought that it did not make a big difference. However, that was done by measuring the average maximum fitness score. If we measure how many generations it takes for the evolution to reach a benchmark score, we find that more individuals helps significantly.</li> </ol> </li> </ol> </li> <li>The number of neutrinos per individual has been increased to 600k. <ol> <li>This was done to make the fitness scores more precise. At 300k neutrinos, we expect an error of around 0.2. This will cut things down closer to 0.1, which may help us decrease the number of outlier measurements without increasing run time too much because of the AraSim speed up.</li> </ol> </li> </ol> <p>This run may take longer than previous runs due to the increased number of individuals. There may need to be modifications made to resolve or work around AraSim errors that delay the loop (due to the auto-resubmit function). Find the details of the run attached.</p></td> </tr> </tbody> </table> </p><p> </p>
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